Universal joint.



a. zmcaasm UNIVERSAL JOINT, APPLiCATION FILED APR. 34. 1313.

I MT/VESSEJ flTTOR/VEK use. in power I vantageously'used in flanges C and ball surface.

p the engaging and State of Illinois,

tion.

-tion shown on line 'locked so as UNITED STATES. rapier-ounce JOHN ERICKSON, OF CHICAGO, IlIiLINOIS.

nmv nnsan JGiINT.

Specification of Letters latent.

Patented on. 10, 1916.

Application filed April 14, 1913. Serial No. 760,968.

To all whom it may concern:

Be .it I known that 1, JOHN ERIGKSON, a citizen oftheUnited States of America, and resident of Chicago,'in the county of'Cook have invented certain new and useful'lmprovements in Universal J oints, of which the following is a specifica- The present invention relates. to universal joints, and while particularly adapted for transmission and automobiles, it will be apparent, after'a consideration of the specification, that the joint may be ad other structures where universal joints may be applied.

1 Among the objects of sal .joint, the principal rubbing surfaces of which are completely inclosed, which .111" casement may be mately filled with a lubricating medium; to

provide an improved clamping member for holding the joint together 0 connection therewith a packing which will and to .provide 1n prevent leakage of the lubricating fluid, and to provide certain other details of improvements tending to increase the eiiiciency and serviceability of a universal joint.

Inthe drawings, Figure 1 shows the joint in side elev-ationassembledi Fig. 2 is a sec- 2-2, Fig. 1. Fig. 3 is the .whichthe movements of central ball upon v In Fig. 4 is a sectlon on the joint hinge.

line 4-4, Fig. 3.

in position,

my invention are the followingz to. provide an improved univer completely on approxicollar J is provided with a packing an, L, which plays upon the back surface of the cup H, and which prevents any leakage of the 'oil or other lubricating medium containedwithin the hollow section M, formed by the cups E, H and the cap J..

Wl1at I claim as my invention is:

1. In a joint, a pair of socket members, a pivot ball commontosaid socket members, and means disconnected from said ball for holding said members and ball in operative engagement, said means comprising a cap over one of said members in sliding engagement therewith and permanently fixed to the other for holding said members in operative engagement with said ball, said cap discon-- nected from said-ball, said ball and members interlocked whereby one member may drive the other through the ball.

In a joint, a pair of socket members,

a pivot ball common to said socket members,

and means disconnected from said ball for holding said members and ball in operative engagement, said means comprising a cap over one of said members in sliding engagement therewith and permanently fixed to the other for holding said members in oper ative engagement with said 'ball, said cap movable relative to said ball, said ball and members interlocked whereby .onemember may drive the other through the ball.

3. A universal joint consisting only of thefollowing elements: a pivot member, a socket member having a groove, a second socket member having a groove, a cap inclosing one socket and fixed to the other and a packing ring, each element being a separate unitary structure,

other, said ballprovided with a tongue for each groove for restricting themovements of the members.

JOHN ERICKSON. Witnesses:

J. COOLEY, C. A. GREGORY.

each element except the cap and packingringmovable relative to every. 85, 

